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Hi everyone
I am trying to convert a table in the following way :
Every row needs to be multiplied "x" times, and "x" equals a value in a cell of that row.
The example belows will help I guess
The starting table is the following :
The result needs to a table in which the first row of the initial tabel appears 10 times; and the second line of the inital table appears 2 times
Thanks for your help / input
Regards
Bjorn
Solved! Go to Solution.
Here's one way to do it in the query editor, by adding a simple List column using the Number column. To see how it works, just create a blank query, open the Advanced Editor and replace the text there with the M code below.
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTLUN9Q3MjAyBDI980B8A6VYHYiUEULKv7QEJKAUGwsA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Product = _t, Date = _t, Type = _t, Number = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Number", Int64.Type}, {"Date", type date}}),
#"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each {1..[Number]}),
#"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom"),
#"Removed Columns" = Table.RemoveColumns(#"Expanded Custom",{"Custom"}),
#"Rounded Up" = Table.TransformColumns(#"Removed Columns",{{"Number", each 1, Int64.Type}})
in
#"Rounded Up"
Pat
To learn more about Power BI, follow me on Twitter or subscribe on YouTube.
Here's one way to do it in the query editor, by adding a simple List column using the Number column. To see how it works, just create a blank query, open the Advanced Editor and replace the text there with the M code below.
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTLUN9Q3MjAyBDI980B8A6VYHYiUEULKv7QEJKAUGwsA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Product = _t, Date = _t, Type = _t, Number = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Number", Int64.Type}, {"Date", type date}}),
#"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each {1..[Number]}),
#"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom"),
#"Removed Columns" = Table.RemoveColumns(#"Expanded Custom",{"Custom"}),
#"Rounded Up" = Table.TransformColumns(#"Removed Columns",{{"Number", each 1, Int64.Type}})
in
#"Rounded Up"
Pat
To learn more about Power BI, follow me on Twitter or subscribe on YouTube.
Here is another aproach. Try this in blank query and adjust accordingly.
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUaqoABJGSrE60UpOQFZlJZAwVYqNBQA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Number = _t]),
Cols = Table.ColumnNames(Source),
Tables = Table.ExpandTableColumn(Table.SelectColumns(Table.AddColumn(Source, "x", each Table.FromRows(List.Repeat({List.RemoveLastN(Record.ToList(_),1)&{1}}, Number.From([Number])), Cols)), "x"), "x", Cols)
in
Tables
This was actually a pretty good idea you came up with. Here's how I would implement it:
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTLUN9Q3MjAyADI980B8A6VYnWglJyDTCCHlX1oCElCKjQUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t, Column4 = _t]),
#"Renamed Columns" = Table.RenameColumns(Source,{{"Column1", "Product"}, {"Column2", "Date"}, {"Column3", "Type"}, {"Column4", "Number"}}),
#"Changed Type" = Table.TransformColumnTypes(#"Renamed Columns",{{"Date", type date}, {"Number", Int64.Type}}),
#"Grouped Rows" = Table.Group(#"Changed Type", {"Product", "Date", "Type"}, {{"Rows", each List.Max([Number]), type nullable number}, {"Details", each _, type table [Product=nullable text, Date=nullable date, Type=nullable text, Number=nullable number]}}),
Custom1 = Table.TransformColumns(#"Grouped Rows", {{"Details", each Table.Repeat(_, [Number]{0})}}),
#"Removed Other Columns" = Table.SelectColumns(Custom1,{"Details"}),
#"Expanded Details" = Table.ExpandTableColumn(#"Removed Other Columns", "Details", {"Product", "Date", "Type", "Number"}, {"Product", "Date", "Type", "Number"})
in
#"Expanded Details"
The key is the Table.Repeat function on the column of tables, via Table.Transform Columns, and to use the nested "Number"Column as the parameter, or number to repeat [Number]{0}, or Number column, first row.
Using Table.TransformColumns instead of always using Table.AddColumns all the time. And the "each" keyword works in that context as well!
--Nate
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